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Why Ferrets Get Red Behinds

Find out what causes uncomfortable and often treatable rectal or anal prolapse in ferrets.

By Rene C. Gandolfi, DVM, DABVP

Anal or rectal prolapse is an extremely uncomfortable condition for your ferret
© Carolyn A. McKeone
A ferret suffering from prolapse might have symptoms that cause it mild to major discomfort. A veterinarian can determine whether the cause of prolapse is life-threatening.

It isn’t the most serious of problems for your ferret, but it is both a very uncomfortable condition and it can be a sign of something much more dangerous going on inside. It is not a pleasant topic to think about and probably even worse for your ferret to experience. It is called a rectal or anal prolapse. The technical term is proctitis, or inflammation of the anus or rectum.

What It Is
What you observe protruding from the anal region is red, swollen tissue that is sometimes soiled with diarrhea or mucus from the lower bowel. Or, you might just see your little guy scooting along the floor as it tries to rub or scratch the irritated area — and the rubbing is only going to make the situation worse.

In simple terms, proctitis means that some irritation or inflammation in the intestinal tract of the ferret is causing the swelling or sensitivity that you see. Just about anything that causes inflammation in the colon or straining to defecate can trigger this ailment.

Don't Be Fooled
This ailment in females can mimic a prolapse. Click Here>>

In a true rectal prolapse, the lining layer of the end of the colon gets pushed out past the anal sphincter. This may seem somewhat like hemorrhoids, but is actually more like what happens when you pull part of a sock inside out. Many things can lead to a rectal prolapse. Probably the most common cause is chronic diarrhea. When the ferret has to strain to defecate, it is repeatedly pushing, tensing the abdomen in an attempt to force out stool even though there may not be anything left in the colon to expel. The diarrhea can itself be a cause of the prolapse or, more likely and more importantly from a treatment standpoint, whatever is causing the diarrhea creates the development of rectal swelling and protrusion.

Possible Causes Of Proctitis
Inflammatory Bowel Disease
Lymphoma
Bacterial Infections
Corona Virus (ECE)
Intestinal Parasites (Coccidia)
Proliferative Bowel Disease

Possible Causes
What are the possible causes of diarrhea in the ferret? Intestinal parasites, though fairly rare in ferrets that are fed a good quality commercial ferret (or kitten food) diet, can lead to both intestinal irritation and diarrhea. A number of different small and sometimes microscopic little creatures can invade the intestines. The most common of these is a protozoan parasite called Coccidia. It is a disease spread from ferret to ferret in contaminated feces and is most often found in juveniles that have yet to develop their own natural immunity. If the kit is especially stressed by transport, poor nutrition or other diseases, Coccidia tend to get the upper hand. Diagnosis is made by examination of the stool looking for microscopic eggs. Treatment with an oral sulfa antibiotic is usually effective.

A more serious and far more commonly encountered cause of diarrhea is a bacterial infection of the intestines. Ferrets can become infected with a number of pathogenic bacteria — including Salmonella, Campylobacter and Mycobacteria (tuberculosis) — by eating contaminated raw meats. Again, ferrets living on a diet of commercial food would not be at risk of infection. Many ferret enthusiasts swear on a raw meat diet for their ferret, but veterinarians will tell you that they rarely see these types of invaders if foods are properly cooked to destroy the bacteria.

For most bacterial infections of the gut, veterinarians prescribe “broad spectrum” antibiotics. This means that the ferret is usually getting a combination of two (or more) different antibiotics at the same time. With this approach, the doctor is essentially trying to “cover all the bases” and simultaneously treat many different types of bacteria that might be causing the infection, without knowing exactly which bacteria is the culprit.

One particular bacterial infection of the intestines of ferrets cannot be treated with this kind of approach. Most of the “broad spectrum” antibiotics that are commonly used in ferrets do not seem to be effective in treating this disease. Though textbooks seem to make a big deal of a condition called proliferative bowel disease or proliferative ileitis, this condition is quite rare in the United States. Usually seen in ferrets below 18 months of age and caused by infection with a bacteria called Lawsonia intracellularis, this disease leads to significant thickening of the ileum (the very last part of the small intestine) and or colon. The ferret can experience severe tenesmus (straining to defecate), which leads to rectal prolapse. Infection can cause serious debilitation with chronic diarrhea and significant weight loss. Because of the severe inflammation, the thickened section of colon can often be palpated during a physical examination.

Another intestinal disease is called eosinophilic gastroenteritis, and it can result in significant intestinal complications, straining and diarrhea included. The cause of this condition is not well understood but, fortunately, this too is a fairly rare condition. Diagnosis is made with intestinal and lymph node biopsy demonstrating the characteristic infiltration with large numbers of white blood cells called eosinophils, as well as sometimes finding changes in the blood count with an elevation of the eosinophil population of cells. Treatment is similar to that for inflammatory bowel disease.

Inflammatory bowel disease (IBD) and intestinal cancer (usually lymphoma) are two serious causes of intestinal upset. Either can lead to fatal consequences and complications, and one, IBD is probably the most commonly encountered intestinal disorder of any of the various conditions to which ferrets are prone.

Lymphoma is a cancer of lymphocytes, blood cells that can circulate throughout the body. As a result, this disease can affect just about any organ in the body. The role of lymphocytes is to regulate the immune system and to help deal with infections of various types. For this reason, lymphocytes tend to concentrate in places where invading organisms can find an entry into the body. Your tonsils are an accumulation of lymphocytes positioned at the beginning of your throat where bacteria and viruses try to enter through your nose or mouth.

Lymphocytes are found throughout the intestinal tract. Because everything we eat and drink is composed of foreign substances, they are not made up of cells from our own bodies, and lymphocytes in the gut must constantly be deciding if something in the intestine is friend or foe. When the body begins to feel that there is something in the intestines that might be an attacker, the lymphocytes coordinate the defense and help mount an inflammatory response. If the target is a bad guy like some E. coli bacteria, this response is both appropriate and protective. If, however, the body seems to think that something in today’s lunch is trying to attack, the same defensive reaction will take place. And the battlefield is within the walls and lining of the intestine. The result is inflammatory bowel disease.

Many different conditions can then be triggered in the inflamed intestine. Besides swelling or thickening, the environment may become conducive to the growth of bacteria that are dangerous — and bacterial overgrowth, bacterial enteritis or even body-wide sepsis can result. Chronic inflammation can cause microscopic scarring and loss of digestive capabilities that prevent proper digestion and absorption of nutrients, and lead to bouts of diarrhea and straining.

If the lymphocytes are kept in a highly stimulated state, the chance that they will overgrow and turn into a cancerlike lymphoma of the intestines increases. If this happens, all of the same problems that happen with IBD can develop, only in a more serious form.

Not all the causes of anal inflammation occur inside the intestines. Most ferrets in the United States are de-scented, that is they have had their scent glands surgically removed. The scent glands are located within the anal sphincter muscles and are responsible for producing a secretion with a very noxious odor. If you have ever had the opportunity to get a whiff of ferret anal gland material, it is an experience you will make every effort to avoid in the future. If a ferret has its scent glands and one of these glands becomes impacted or infected, the area around the anus can become swollen and inflamed. Infections are usually treated with antibiotics. Occasionally the area fills with pus and needs to be surgically drained.

The scent glands produce a secretion which is usually quite liquid. Impactions change the character or consistency of these secretions. If they thicken or develop a more granular consistency due to infection or inflammation, the narrow duct leading from the gland to the surface can become plugged, causing the gland to swell much like an abscess. Gentle manipulation (usually under anesthesia) and flushing of the duct and gland can sometimes relieve the obstruction and allow the gland to drain. Persistent problems are best dealt with surgical removal of the glands. Though the surgery is not terribly difficult, seek a veterinarian to do it who is very familiar with ferret anatomy, as improper removal can end up leaving behind glandular tissue that may later cause an abscess even though most all of the gland has been removed.

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Reader Comments
Hey Josiesmom. In the wild ferrets don't eat chopped up raw chicken parts. I think that is why vets don't recommend feeding raw diets. It is the raw packaged meats that most likely contain the salmonella bug. Ferrets are hunters if they were wild, which they are not. No such thing as a wild ferret. Polecat yes, they are wild. But anyway, ferrets would be hunters and would need a prey diet. When they kill it and eat it right away, they don't risk getting salmonella. Your raw meat on the other hand does risk giving them salmonella. Unless you are killing the chicken yourself and feeding it to them right away.
5ferrets, Trail, BC
Posted: 4/10/2009 1:23:56 PM
Dr. Rene C Gandolfi writes:
"Ferrets can become infected with a number of pathogenic bacteria — including Salmonella, Campylobacter and Mycobacteria (tuberculosis) — by eating contaminated raw meats. Again, ferrets living on a diet of commercial food would not be at risk of infection."

Salmonella bacterial colonies take 6 hours to grow to a level large enough to cause ill health. the ferret's digestive tract empties in 3 to 4 hours!

Salmonella bacteria can be and have been and ARE found within commercial foods - NOT just raw meats! Dr. Gandolfi's statement is yet one more misleading statement made to try and convince people that feeding their ferrets what they have evolved to eat is somehow detrimental to them while trying to maintain that feeding ferrets a diet of foreign substances IS safe and healthy!

There are several instances where DRY kibbles have been infected with Salmonella bacteria and have either caused sickness in humans, deaths of animals and have even been recalled! Salmonella bacteria also live in soil and will readily infect animals that dig or roll in the contaminated soil and then groom themselves!

Dr. Gandolfi also writes:
"Inflammatory bowel disease ... (IBD) is probably the most commonly encountered intestinal disorder of any of the various conditions to which ferrets are prone" Considering the large amounts of ferrets forced to eat foreign foods in the form of grains and other plant matter in the kibbles as well as who knows what mixed into the kibble- is it any wonder that their bowels become irritated? The large majority of cat and kitten foods as well as ferret foods on the market use some form of corn as a base for the kibble. Corn is indigestible within the ferret's digestive tract. the corn is usually ground and as such is quite like small grains of gritty sand paper scraping through the ferret's bowels. Small wonder they become irritated, especially when ferrets have to eat three or four times the amount of kibble to obtain nourishment as they do with a wholesome piece of natural meaty bones that are FULL of bio available nutrients!

Veterinarians, of ALL people, should STOP perpetuating the MYTHS that feeding a natural diet puts ferrets at risk, they should encourage pet owners to offer their pets a species appropriate diet so that the pets can enjoy optimum health!

Pet foods are designed and packaged with ingredients that appeal to the human buying them - not the animal eating them! Kibbles are an UN natural food and in a poor form to offer any sort of decent health! Ferrets are OBLIGATE carnivores and when fed as such will exhibit superb health and be free of many of the so called "common ailments" that are so well known among ferrets!

Stop feeding your ferret like a cow and let it eat what it has evolved to eat in the form it was meant to eat - RAW natural whole prey or at least raw meaty bones!
JosiesMom, Ormond Beach, FL
Posted: 9/5/2008 8:28:22 PM
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